Regarding everything you hear someone say in the name of a gadol.
I know someone who sent the following shayla to R’ Chaim Kanievsky Shlita (I saw the shayla written and put into the envelope). I heard bsheim your father z’l that there is an inyan to make a kiddush for a girl, true? The response lo hadam ati saw it – unless there is an elaborate hoax going on somewhere regarding answering shaaylos sent to R’ Chaim). If something sounds fishy, your not an apikores for questioning it.